The specific formula for calculating exercise heart rate is such as (220 – actual age) x 0.6 = minimum exercise heart rate and (220 – actual age) x 0.8 = maximum exercise heart rate. Under normal circumstances, the target heart rate for human weight loss is between 50% and 80%. Heart rate refers to the number of heartbeats in one minute, at rest is the lowest heart rate stage, when the process of exercise heart rate will be accelerated with the human system tissue circulation metabolic function and a different degree of rise. However, it should be noted that the heart rate has a limit range, and this limit value is related to individual age, health status, fitness level and other factors. If the heart is overloaded for a long time, it is likely to cause adverse symptoms, so you need to take into account your actual situation and develop a suitable exercise program.